• 1 January 1979
    • journal article
    • research article
    • Vol. B130 (4), 457-466
Abstract
The 24 strains of M. simiae described were isolated from 12 black Africans, 6 from white Europeans, 5 from primates and 1 from a leprosy-infected armadillo. These strains form 3 groups having similar morphologic and cultural properties to M. intracellulare. Two groups were similar with respect to pigmentation, urease activity and niacin production but differed serologically, the 2nd group being of M. intracellulare serotype 18. The 3rd group was less homogenous and was intermediate to M. simiae and M. intracellulare. M. simiae belongs to the M. avium-M. intracellulare-M. simiae-M. scrofulaceum (MAISS) complex. Two cases of well-characterized pulmonary disease progressed like M. avium mycobacteriosis.